How to Convert JPG to PNG Online Free

Converting JPG to PNG is most commonly needed when you want to add a transparent background to a photo, or when you need to make further edits to an image without any additional quality loss from JPEG re-compression. Understanding when this conversion makes sense — and when it doesn't — will save you unnecessary large file sizes.

Why Convert JPG to PNG?

The main reasons to convert a JPG to PNG are: (1) you need to add transparency — perhaps to remove a background and place the subject on a coloured or patterned surface; (2) you're going to edit the image multiple times and want to avoid repeated JPEG re-compression; or (3) a specific platform or workflow requires PNG format. Note that converting JPG to PNG doesn't "restore" quality lost during JPEG compression — it simply prevents any further quality loss.

How to Convert JPG to PNG Online

1. Open the Image Converter at imgresizr.com.
2. Upload your JPG file.
3. Select PNG as the output format.
4. Click Convert — no quality settings needed; PNG is lossless.
5. Download your PNG file.

Important Things to Know About JPG to PNG

PNG Will Always Be Larger Than JPG

A JPG converted to PNG will be significantly larger in file size — often 3–5× bigger. This is because PNG stores every pixel losslessly, while JPG uses lossy compression. If you're converting to reduce file size, this is the wrong direction — use the compressor on the JPG instead.

Quality Loss From JPG Cannot Be Reversed

Converting a JPG to PNG preserves the current quality of the JPG, but it doesn't add back any quality that was lost when the original file was first saved as JPG. Think of it as putting a photocopy into a higher-quality container — the copy doesn't become the original.